<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>小黑的书架</title>
  </head>
  <body>
    <div id="app">
      <ul>
        <li v-for="(item,index) in books">
          <span>{{ item.name }}</span>
          <span>{{ item.author }}</span>
          <button v-on:click="del(item.id)">删除</button>
        </li>
      </ul>
    </div>
    <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
    <script>
      const app = new Vue({
        el: "#app",
        data: {
          books: [
            { id: 1, name: "《红楼梦》", author: "曹雪芹" },
            { id: 2, name: "《西游记》", author: "吴承恩" },
            { id: 3, name: "《水浒传》", author: "施耐庵" },
            { id: 4, name: "《三国演义》", author: "罗贯中" },
          ],
        },
        methods: {
          del(id) {
            console.log(id);
            this.books = this.books.filter((item) => item.id !== id);
          },
        },
      });
    </script>
  </body>
</html>
